<script setup lang="ts">
import { computed, ref } from 'vue'

const list = ref([
  { id: 1, name: '篮球', num: 1 },
  { id: 2, name: '玩具', num: 2 },
  { id: 3, name: '铅笔', num: 5 },
])
let num=ref(0)
const add=computed(()=>{
  return list.value.reduce((pre,item)=>{return pre+item.num },0)
})
</script>


<template>
  <div id="app">
    <h3>小黑的礼物清单</h3>
    <table>
      <tr>
        <th>名字</th>
        <th>数量</th>
      </tr>
      <tr v-for="(item) in list" :key="item.id">
        <td>{{ item.name }}</td>
        <td>{{ item.num }}个</td>
      </tr>
    </table>
    <!-- 目标：统计求和，求得礼物总数 -->
    <p>礼物总数：{{add}} 个</p>
  </div>
</template>

<style>
table {
  border: 1px solid #000;
  text-align: center;
  width: 240px;
}

th,
td {
  border: 1px solid #000;
}

h3 {
  position: relative;
}
</style>
